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anand76 add68bd28a Add a stat to count secondary cache hits (#8666) 
Summary:
Add a stat for secondary cache hits. The ```Cache::Lookup``` API had an unused ```stats``` parameter. This PR uses that to pass the pointer to a ```Statistics``` object that ```LRUCache``` uses to record the stat.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8666

Test Plan: Update a unit test in lru_cache_test

Reviewed By: zhichao-cao

Differential Revision: D30353816

Pulled By: anand1976

fbshipit-source-id: 2046f78b460428877a26ffdd2bb914ae47dfbe77
2021-08-16 21:01:14 -07:00
..
cache.cc Make SecondaryCache Customizable (#8480) 2021-07-06 09:18:08 -07:00
cache_bench.cc Allow cache_bench/db_bench to use a custom secondary cache (#8312) 2021-05-19 15:26:18 -07:00
cache_bench_tool.cc Make SecondaryCache Customizable (#8480) 2021-07-06 09:18:08 -07:00
cache_entry_roles.cc Use deleters to label cache entries and collect stats (#8297) 2021-05-19 16:51:13 -07:00
cache_entry_roles.h Clarify some DB::Open,OpenForReadOnly semantics (#8379) 2021-06-14 16:09:21 -07:00
cache_entry_stats.h Don't hold DB mutex for block cache entry stat scans (#8538) 2021-07-16 14:13:08 -07:00
cache_helpers.h Use deleters to label cache entries and collect stats (#8297) 2021-05-19 16:51:13 -07:00
cache_test.cc Use deleters to label cache entries and collect stats (#8297) 2021-05-19 16:51:13 -07:00
clock_cache.cc Add a stat to count secondary cache hits (#8666) 2021-08-16 21:01:14 -07:00
clock_cache.h Change RocksDB License 2017-07-15 16:11:23 -07:00
lru_cache.cc Add a stat to count secondary cache hits (#8666) 2021-08-16 21:01:14 -07:00
lru_cache.h Add a stat to count secondary cache hits (#8666) 2021-08-16 21:01:14 -07:00
lru_cache_test.cc Add a stat to count secondary cache hits (#8666) 2021-08-16 21:01:14 -07:00
sharded_cache.cc Add a stat to count secondary cache hits (#8666) 2021-08-16 21:01:14 -07:00
sharded_cache.h Add a stat to count secondary cache hits (#8666) 2021-08-16 21:01:14 -07:00